Metal window construction.



G. H. FORSYTH.

METAL WINDOW CONSTRUCTION.

APPLICATION FILED DEC. 10, 1913.

1,1 81,625. Patented Mar. 9,;1915.

GEORGE E. FOR-SYTH, OF CHICAGO, ILLINOIS.

METAL WINDOW CONSTRUCTION.

, Specification of Letters latent.

. Patented Mar. 9, 1915.

Original application filed October 27, 1908, Serial No. 459,775. Divided and this application filed December 10, 1913. Serial No. 805,738.

To all whom it may concern:

Be it known that I, GEORGE H. FoRsY'rH,

a citizen of the United States, residing at fication.

construction of which t application Serial No. 459,77 5, filed October 27, 1908, while relating to sash construction in general has for its particular object the formation of the sash corner lock and lock plate of such shape and in such relation that they cooperate in effectin a compact rigid he sash members may be much narrower than is ordinarily found to be necessary to accommodate the lock and of lighter material due to the reinforcing action of the lock plate andcoopcrating interior reinforcement. The lock plate not only serves as a mounting for certain of the locking elements but has formed integral therewith the sash lift which is arranged to cooperate with the movable lock element. f

Other advantages from the standpoint of mechanical construction and operation will be apparent to those skilled in this art-.

In order that the invention may be readily understood a practical embodiment of the same is set forth in the accompanying drawing and in the description based thereon.

As the invention is capable of embodiment in other and varied constructional forms the drawing and description are to be construed as illustrative and not in an unnecessarily limiting sense.

In the drawings-Figure 1 is a side elevation of a sash corner embodying the inven tion; Fig. 2is a horizontal section on the line 22 of Fig. 1; and Fig. 3 is a similar section on the line 33 of Fig. 1.

- Having reference to the'drawing the sash members, that is to say, the stile'll andthe rail .12 are shown as connected at right angles to form a 'sash corner. The sash members are here shown as formed of sheet metal tubular in cross section hav ng a reentrant portion 14 forming a groove for the reception of the glass 15. The sash stile is also provided along its outer edge with a reentrant groove 16 for the reception of means to effect a frictional engagement between the This invention, which is a division of my stile 11 and the bottom of its guide 17. The particular frictional means thus employed form no part of the'present invention being fully set forth in the application of which this is a division and being operable to lock and release the sliding sash by means of a movable lock member 18 connected to such friction means at 19 and projecting as a finger piece through the inner edge of the stile into the position shown in Fig. 1 overlying the glass area of the sash.

It is desirable both from the standpoint I of economy of material and also in order to encroach as little as possible upon the window opening that the rail and stile be as narrow as is consistent with the requisite strength and with the necessity of affording a proper support and bearing for the sash lock. Ordinarily the sash members are made wider than would be otherwise necessary for the reason that one, and usually the rail, must be made wide enough to accommodate the lock plate and lock. By the present invention I am enabled to reduce the width "of the rail and stile to an inch or less and also to employ as the material thereof metal of a lighter gage.

In carrying out the invention I provide a lock plate 20 which is secured to the rail and stile advantageously by screws 21, 21 extending through the material of the sash members into an interior corner reinforce-' ment hereinafter described. This lock plate is angular in outline and preferably substantially triangular fitting within the angle formed by the inner edges of the sash mem bers and overlying the glass area of the sash. The outer edges of the plate are deflected laterally away from the glass, as'indicated at 22 and 23, so as to fit snugly against the inner edges of both rail and stile closely adjacent to the reentrant portion 14. It will thus be observed that the lock plate is confined substantially within a plane bounded on the one side by the glass and on the other by the outer faces of the sash members whereby the mounting of the plate permits the sash to be very narrow and tooperate within guide grooves of a depth approximating the width of the stile the whole extent of the projection of the lift beyond the plate, lying within the plane of the outer faces of the sash members. The movable finger piece of the lock mechanism projects through the inner edge of the stile, .which is slotted for that purpose, and also through an offset portion ofthe lock plate i into aconvenient position adjacent the stationary lock member or finger piece 24.

The sash is interiorly reinforced at its corners by an L shaped reinforcement of channel shape cross section, clearly shown in Fig. 3, 'fitting within the meeting ends of the I hollow stile and rail. Where one side of the stile is, as shown, made somewhat thicker than the other, an auxiliary filling strip 26 is employed to avoid the necessity of a spe cial construction of channel reinforcement, and this latter may and preferably does extend into the space alongside the rentrant groove 14 beneath the deflected portions 22 and 23 of the lock plate also thus reinforcing the bead. To reinforce the inner portion of the hollow stile I insert an interior bent metal sheathing strip 27 and to further reinforce the bead underiying the deflected portion of the lock plate insert a reinforcmg block 28 which is slotted to accommodate .the locking lever 18 and which also forms an anchorage for the screws 21 by means of which the locking plate 20 is secured in place. a In addition to the screws 21 and to relieve the latter of strains the plate 20 is provided with inwardly projectin lugs 29 which passed through the bead an into the reinforcing members 27 and 28. By this arrangement, I obtain an exceptionally substantial. sash construction, the lock plate 20 serving as an exterior'reinforcement cooperating with the interior reinforcement Y member 25, 27 and 29 to support and rigidly connect the sash members, and to transmit the strains due to the operation of the sash to both stile and rail, which latter, by reason of the mounting of the lock members within the angle formed by the inner edges thereof, may be exceptionally narrow.

claim r "1 1. In sash construction, the combination form a sash corner, a reinforcing plate so "cured-to both of the said members, the said .ofsash members connected at an angle to hate being spaced a substantial distance rom the-outer edge of the sash members and having its edges deflected to hug the exterior face of the inner edges of the mem- 5 bers, and plate and a lock .member carried by said sash, substantially as described.

n, sash construction, the combination of sash members connected at an angle to :form a sash corner, a reinforcing plate dis- "POS8d in part within the angle and secured to both 0 the said members, the said plate lying substantially within the planes boundoverlying the glass area of the ed by the two faces of the sash and having its outer edges deflected to hug the inner edges of the members, and a lock member carried by said plate and overlying the lass area of the sash, substantially as described.

3. In sash construction, the combination of sash members connected at an angle to form a sash corner, a reinforcing plate disposed in part within the angle formed by and secured to the inner edges of both of said members, the said plate having its outer edges deflected to hug the inner edges of the members and lying substantially within the planes bounded by the two faces of the sash, and an integral lock member carried by the plate and projecting laterally therefrom substantially as described.

4. In sash construction, the combination of sash members connected at an angle to form a sash corner, a reinforcing plate disposed in .part within the angle formed by and secured to the said members, the said plate having its outer edges deflected to hug the inner edges of the members and planes bounded by the two sash, the plate having also an extending into a sash as described.

5. In sash construction, the combination of sash members connected at an angle to form a sash corner, an exterior reinforcing plate secured to the sash members at a substantial distance from the outer edge thereof and having an extended bearin along the inner edges of said members, ant? a separate rein forcing member disposed within the adjacent ends of the sash members and serving as an anchorage for the plate, substantially as described.

6. In sash construction, the combination of sash members connected at an angle to form a sash corner, a reinforcing plate disposed in part within the to the inner edges of both 0 the said flected to bers and lying substantiallywithin the planes bounded by the two faces of a separate reinforcing member disposed within the adjacent ends of the sash members, the plate having an integral lug extending into the sash member and also into engagement with the internal reinforcement, substantially as described.

7. In sash construction, the combination of hollow sash members connected at an angle aces of .the integral lug member, substantially said members, having its outer edges deto form a corner and provided with an ininner edges of both of the sash,

lying substantiall within thean le and secured pllate ug the inner edges of the memterior reinforcement, and an exterior stif-' fening plate secured to the interior reinounded by the two faces of the sash, substantially as described.

12 5 forcement and provided with a lock member f. 9-. In sash construction", the combination of sash'membersconnec ted at anangle to form a corner, an exterior stiffening plate secured'tothe sash at 'a distance from the outer edge thereof-andhaving an extended bearing upon the inner edge of the sash and provided with a lock'member overlying the glass area of scribed.

10. In sash construction, the combination of sash members having a glazing groove flanked by a bead, said members joined at an angle to form a sash corner, a reinforcing plate secured to both of said members and having an extended bearing along the exterior face of the bead, an interior reinforcing member disposed within the bead, and fastening means connecting the reinforcing elements through the bead, substantially as described.

11. In sash construction, the combination of sash members connected at an angle to form a sash corner, .a reinforcing guard plate secured to the two members at the corner, and a movable lock-operating member mounted in one of the sash members independently of but overlying the plate.

the sash, substantially as de- 12. In sash construction, the combination of sash members connected at an angle to form a sash corner, a reinforcing guard plate secured to the two members at the corner, a stationary lock member carried by said plate, and a movable lock-operating member mounted in one of the sash members independently of the plate and extending adjacent the stationary lock-member carried by the plate. 1

13. In sash construction, the combination with sash members connected at an angle to form a corner, of an exterior plate depressed Within the angle and connected to the rail and stile, the depressed portion of the plate being of considerable area and overlying the face of the glass, and a sash operating member associated with said plate.

14. In sash construction, the combination with sash members connected at an angle to form a corner, of an exterior reinforcing guard plate of general trangular shape depressed within the angle and connected to the rail :IBIld stile, the depressed portion of the plate being substantially fiat and of considerable area and overlying the face of the glass, and a sash lock associated with said GEORGE H. FORSYTH.

Witnesses:

LEWIS T. GREIST, T. D. BUTLER. 

